Interim Notifications of Environmental Quality Limits Exceedances

Incident Report on Action Level or Limit Level Non-compliance

Project	Contract No. CV/2004/13 Construction Waste Sorting Facilities at Tseung Kwan O Area 137 and Tuen Mun Area 38
Sampling Date	13 March 2006
Time	09:00 – 09:00
Monitoring Location	TKO1
Parameter	24-hr TSP
Action / Limit Level	260 / 260 µg/m^3
Measured Level	311.5 µg/m^3
Major Construction Dust Source(s) During Measurement	· Major dust source was fugitive dust from dumping and sorting of waste inside the site; · Other dust source was from vehicles movement on the haul road leading to Area A.
Observed Construction Activities from Other Construction Site	· Vehicles movement and dumping activities inside the adjacent CWSF.
Possible reason for Action / Limit Level Non-compliance	· Fugitive dust generated from the sorting activities inside the CWSF and from vehicle movement on the haul road leading to Area A.
Actions taken / to be taken	· Fugitive dust was observed during the site inspections on 6 and 16 March 2006 at dumping and sorting area, the Contractor was reminded to review the frequency of the water dampening programme. · Water truck had been deployed 4 times for dampening the haul road, yet frequency had to be increased; · ET continue to monitor the 24-hour TSP; · Additional monitoring was required to be conducted if the subsequent monitoring result exceeds the A/L Level.
ET Advice	· Ensure all sorting activities and dumping areas are sufficiently dampened; · Provide water sprinklers to haul road, dumping areas and sorting area for water spraying; · Implement proper mitigation measures inside the sorting facilities; · Ensure the area near the site exit and all the haul roads to be sufficiently wet; · Advise the dump truck drivers to travel on the dampened haul roads.
Remarks	· Nil

Interim Notifications of Environmental Quality Limits Exceedances

Incident Report on Action Level or Limit Level Non-compliance

Project	Contract No. CV/2004/13 Construction Waste Sorting Facilities at Tseung Kwan O Area 137 and Tuen Mun Area 38
Sampling Date	24 March 2006
Time	09:00 – 09:00
Monitoring Location	TKO1
Parameter	24-hr TSP
Action / Limit Level	260 / 260 µg/m^3
Measured Level	1358.4 µg/m^3
Major Construction Dust Source(s) During Measurement	· Major dust source was fugitive dust from vehicles movement along the haul road between Area A and Area B2; · Other dust source was from dumping and sorting of waste inside the site.
Observed Construction Activities from Other Construction Site	· Vehicles movement and excavation activities on the stockpile inside the adjacent CWSF.
Possible reason for Action / Limit Level Non-compliance	· Exceedance was considered mainly due to the dust emission from vehicles movement along haul road and from dumping and sorting activities in Area A; · Excavation of stockpile in the adjacent CWSF had minor contribution to the exceedance.
Actions taken / to be taken	· Fugitive dust was observed during the site inspections on 23 and 30 March 2006 at dumping and sorting area, the Contractor was reminded to review the frequency of the water dampening programme. · Water truck had been deployed 4 times for dampening the haul road, yet frequency had to be increased; · ET continue to monitor the 24-hour TSP; · Additional monitoring was required to be conducted if the subsequent monitoring result exceeds the A/L Level.
ET Advice	· Ensure all sorting activities and dumping areas are sufficiently dampened; · Provide water sprinklers to haul road, dumping areas and sorting area for water spraying; · Implement proper mitigation measures inside the sorting facilities; · Ensure all the haul roads to be sufficiently wet; · Advise the dump truck drivers to travel on the dampened haul roads.
Remarks	· The monitoring station TKO1 had been relocated on 23 March 2006 and the first monitoring event at the new location was conducted on 24 March 2006.

Interim Notifications of Environmental Quality Limits Exceedances

Incident Report on Action Level or Limit Level Non-compliance

Project	Contract No. CV/2004/13 Construction Waste Sorting Facilities at Tseung Kwan O Area 137 and Tuen Mun Area 38
Sampling Date	30 March 2006
Time	09:00 – 09:00
Monitoring Location	TKO1
Parameter	24-hr TSP
Action / Limit Level	260 / 260 µg/m^3
Measured Level	806.6 µg/m^3
Major Construction Dust Source(s) During Measurement	· Major dust source was fugitive dust from vehicles movement along the haul road between Area A and Area B2; · Other dust source was from dumping and sorting of waste inside the site.
Observed Construction Activities from Other Construction Site	· Vehicles movement and excavation activities on the stockpile inside the adjacent CWSF.
Possible reason for Action / Limit Level Non-compliance	· Exceedance was considered mainly due to the dust emission from vehicles movement along haul road and from dumping and sorting activities in Area A.
Actions taken / to be taken	· Fugitive dust was observed during the site inspection on 30 March 2006 along haul road and at dumping and sorting area, the Contractor was reminded to review the frequency of the water dampening programme; · Water truck had been deployed 4 times for dampening the haul road, yet frequency had to be increased; · ET continue to monitor the 24-hour TSP; · Additional monitoring for 24-hour TSP had been scheduled to 6 April 2006.
ET Advice	· Ensure all sorting activities and dumping areas are sufficiently dampened; · Provide water sprinklers to haul road, dumping areas and sorting area for water spraying; · Implement proper mitigation measures inside the sorting facilities; · Ensure all the haul roads to be sufficiently wet; · Advise the dump truck drivers to travel on the dampened haul roads.
Remarks	· Nil